Year Number
1950 56.46
1951 57.712
1952 59.614
1953 61.645
1954 63.703
1955 65.891
1956 69.213
1957 72.216
1958 75.157
1959 78.203
1960 81.346
1961 84.512
1962 87.65
1963 90.585
1964 93.036
1965 94.854
1966 96.307
1967 97.169
1968 97.458
1969 97.275
1970 96.717
1971 95.981
1972 94.93
1973 93.644
1974 92.187
1975 90.612
1976 89.888
1977 88.954
1978 87.9
1979 86.844
1980 85.849
1981 84.61
1982 83.51
1983 82.496
1984 81.478
1985 80.425
1986 79.572
1987 78.626
1988 77.636
1989 76.674
1990 75.761
1991 74.976
1992 74.19
1993 73.338
1994 72.283
1995 70.939
1996 69.591
1997 67.79
1998 65.698
1999 63.558
2000 61.501
2001 58.976
2002 56.864
2003 54.957
2004 52.994
2005 50.916
2006 49.281
2007 47.511
2008 45.782
2009 44.345
2010 43.31
2011 42.68
2012 42.32
2013 42.22
2014 42.305
2015 42.511
2016 42.839
2017 43.276
2018 43.78
2019 44.306
2020 44.827
2021 45.306
2022 45.782
2023 46.23
2024 46.632
2025 46.982
2026 47.287
2027 47.549
2028 47.774
2029 47.985
2030 48.205
2031 48.426
2032 48.664
2033 48.936
2034 49.262
2035 49.658
2036 50.111
2037 50.63
2038 51.214
2039 51.86
2040 52.568
2041 53.291
2042 54.059
2043 54.886
2044 55.783
2045 56.748
2046 57.701
2047 58.709
2048 59.77
2049 60.877
2050 62.027
2051 63.128
2052 64.256
2053 65.41
2054 66.59
2055 67.796
2056 68.927
2057 70.088
2058 71.201
2059 72.145
2060 72.848
2061 73.195
2062 73.313
2063 73.272
2064 73.175
2065 73.089
2066 72.876
2067 72.681
2068 72.532
2069 72.456
2070 72.482
2071 72.47
2072 72.577
2073 72.8
2074 73.126
2075 73.54
2076 73.89
2077 74.338
2078 74.862
2079 75.427
2080 76.007
2081 76.44
2082 76.896
2083 77.371
2084 77.838
2085 78.272
2086 78.514
2087 78.768
2088 78.992
2089 79.171
2090 79.333
2091 79.329
2092 79.296
2093 79.277
2094 79.316
2095 79.418
2096 79.301
2097 79.266
2098 79.305
2099 79.397
2100 79.526